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-rw-r--r--src/fstate.hh3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/fstate.hh b/src/fstate.hh
index 8a873a5acd22..9a8955aeb95b 100644
--- a/src/fstate.hh
+++ b/src/fstate.hh
@@ -93,5 +93,8 @@ ATerm termFromHash(const Hash & hash, string * p = 0);
 /* Write an aterm to the Nix store directory, and return its hash. */
 Hash writeTerm(ATerm t, const string & suffix, string * p = 0);
 
+/* Register a successor. */
+void registerSuccessor(const Hash & fsHash, const Hash & scHash);
+
 
 #endif /* !__EVAL_H */